Red Hat (disambiguation)

Red Hat is an American software company that provides open source software products.


 * Red Hat, a site in Project 112, an American biological and chemical weapon experimentation project
 * Red Hat sect, three different schools of Tibetan Buddhism
 * Red Hat Society,
 * Red hat, one of de Bono's Six Thinking Hats
 * Red hat, a trainee in a volunteer fire department
 * Red Hat Cell Block, a former prison cell block at the Louisiana State Penitentiary
 * Operation Red Hat, a 1971 United States movement of chemical warfare munitions